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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $525,563,688 | 6,231,488 | 6,231,488 |
| 2006 | $541,653,674 | 0 | 0 |
| 2007 | $424,084,527 | 0 | 0 |
| 2008 | $560,935,709 | 0 | 0 |
| 2009 | $675,261,749 | 0 | 0 |
| 2010 | $559,058,172 | 0 | 0 |
| 2011 | $1,186,982,811 | 0 | 0 |
Note: Quantity represents Weight in kilograms
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